Fraction Riddles With Answers. However, after using 1/4 of soap we place all three objects on balance as on. Lilly doubles her size each day, on the 20th day she covers the whole pond.

Although you may need a little cognitive effort, you’ll solve them with ease. Lilly doubles her size each day, on the 20th day she covers the whole pond. Fraction of girls studying in school = 1/2 fraction of girls studying in lower classes = 3/5 of 1/2 = 3/5 × 1/2 = (3 × 1)/ (5 × 2) = 3/10 thus, 3/10 of girls study in lower.